sundial. min 33 s Mars ms analemma If the gnomon α GAST is the Greenwich apparent sidereal time α Δt Λ is the ecliptic longitude Λ = 2 π (t periapsis + tY; λp λ + λp λp, α, ν, e E (M) + e + e sin M + (1/2) e 2 e 2 π~E + e sin E + (1/4) e 2 e e λ λ + λp + 2e sin M sin 2M. λ α λ ε λ = λ. Δt (M) = + λp α (λ), allows Δt e = 23.4393° = 282.9381°-2 π and y e, λp Δte 2 [36] D = Dp and Δtey When D> Dp, D = nY nY Δt, Δtey The parameter Δt Δt Δtey D B B. C C EoT